public class Circle {
  private double radius;
  public Circle(double radius) {
        this.radius = radius;
    }

    public void setRadius(double radius) {
        this.radius = radius;
    }


    public double getCircumference() {
        return 2 * Math.PI * radius;
    }

    public double getArea() {
        
     return Math.PI * radius * radius;
    }

}
